101021030081 has 2 divisors, whose sum is σ = 101021030082. Its totient is φ = 101021030080.

The previous prime is 101021030053. The next prime is 101021030167. The reversal of 101021030081 is 180030120101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99694905025 + 1326125056 = 315745^2 + 36416^2 .

It is a cyclic number.

It is not a de Polignac number, because 101021030081 - 2¹⁴ = 101021013697 is a prime.

It is a super-2 number, since 2×101021030081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (101021030021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50510515040 + 50510515041.

It is an arithmetic number, because the mean of its divisors is an integer number (50510515041).

Almost surely, 2^101021030081 is an apocalyptic number.

It is an amenable number.

101021030081 is a deficient number, since it is larger than the sum of its proper divisors (1).

101021030081 is an equidigital number, since it uses as much as digits as its factorization.

101021030081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 101021030081 its reverse (180030120101), we get a palindrome (281051150182).

The spelling of 101021030081 in words is "one hundred one billion, twenty-one million, thirty thousand, eighty-one".